Brains Reward System/ Positive Reinforcement

Question 1

Positive reinforcement

Answer 1

pleasant stimulus that increase likelihood of behaviour. (you take drug, it feels good, you take more)

Question 2

Brain reward circuit (pathways rich with dopaminergic neurons)

Answer 2

Nigrostriatal Pathway:
- motor movementà

Mesolimbic pathway:

• Reward/high/euphoria
• Salience (focused attention to drug compared to anything else in environment)
• Change in value system - drug has more value than anything else

Mesolimbic Pathway:
- Motivation